PPH valves and piping are the cost-effective answer to hot caustic and alkaline service. PPH (polypropylene homopolymer) stays stable up to 85°C where sodium hydroxide, potassium hydroxide and similar media attack lesser plastics — which is why chlor-alkali plants and caustic-dosing systems rely on it. Huiya supplies a complete PPH range — pipe, fittings and pneumatic ball valves — in both DIN metric and ANSI/ASTM dimensions to suit project specifications worldwide, for chlor-alkali, chemical processing and wastewater applications. Every product is backed by a 12-month quality warranty. For hot alkaline duty, PPH is usually the most economical material that survives the job, keeping PVDF in reserve for concentrated acids. Browse the PPH products below, or contact us for chemical-compatibility advice and project pricing.
PPH is the value choice for strong caustic and many solvents. Look up your medium against all four plastics in our plastic valve chemical resistance checker.
PPH Diaphragm Valve PPH diaphragm valves (polypropylene homopolymer) are the value choice for strong alkaline service — high-concentration caustic soda, alkali carbonates, and salt solutions — to about 85 °C. Their toughness stands up to hot caustic and abrasion where other plastics struggle. We supply them in true union, flanged, and pneumatic configurations for chlor-alkali, […]
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PPH Ball Valve (Manual) PPH ball valves (polypropylene) give you quarter-turn on/off control of hot alkaline media to about 85 °C — high-concentration caustic soda, alkali carbonates, and salt solutions — in a tough, hand-operated valve. We build ours from virgin PPH with a PTFE seat, in true union and flanged configurations for chlor-alkali, alkali
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PPH Butterfly Valve PPH (polypropylene) butterfly valves give you compact, quarter-turn control of large-bore alkaline and salt lines, DN50 to DN500, in wafer and lug bodies with a PPH disc and an EPDM or FKM seat. They hold up to about 85 °C, the tough, economical choice for big-flow isolation and throttling on caustic, brine,
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PPH Pneumatic Butterfly Valve The Huiya PPH pneumatic butterfly valve is a large-bore automated valve for hot alkaline and corrosive media up to 85°C — built for the high-flow lines where caustic, effluent, and process slurries demand a material that won’t soften or corrode. Made from polypropylene homopolymer (PPH) in sizes DN40 to DN1000, its
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PPH Flanged Pneumatic Ball Valve The Huiya PPH pneumatic flanged ball valve is a large-bore, full-port automated valve for hot alkaline and corrosive service in chemical, metallurgical, and wastewater applications. Available in ANSI Class 150, DIN PN10, and JIS 10K flange standards and sizes DN15–DN200, its one-piece molded flange eliminates root leakage — the ideal
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PPH Pneumatic True Union Ball Valve The Huiya PPH pneumatic ball valve is a true union, full-port automated valve engineered for hot alkaline and corrosive fluids — the applications where PVC, CPVC, and even PVDF reach their limits. Built from polypropylene homopolymer (PPH) and rated to 85°C, it is the material of choice for caustic
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